DEF
Diesel exhaust fluid (DEF) is a non-hazardous liquid used to helps produce cleaner burning diesel engines. All medium- and heavy-duty vehicles with modern diesel engines are required to use DEF.
DEF IS BENEFICIAL FOR YOUR VEHICLES
Injecting DEF into the exhaust stream of diesel vehicles, turns toxic emissions, such as NOx gases, into water and nitrogen. This helps eliminate harmful emissions in the engine after combustion.